Klean Kanteen's Kid Kanteen? Sippy bottle is the answer to every new parent who would like to keep their baby's environment as healthy as possible. The bottle is made from food grade stainless steel that does not retain or impart flavors from its previous contents. The bottle and special adapter are all BPA free making it all totally safe. It's designed for small hands so it's easy to hold. The large mouth makes cleaning as simple as a quick scrub with soap and water.BPA free and eco friendly. Does not retain or impart flavors. Slim design fits most bottle/cup holders. Round corners are easy to clean with no hard angles where dirt germs or bacteria can stick. Fits large ice cubes. Reusable and 100% recyclable. Materials: 18/8 food grade stainless steel. Caps and spouts are made of BPA free polypropylene (pp#5) Size: H 5"" (without cap) x W 2.75"". Opening diameter: 1.75"" Weight: 4 oz. (without cap). Capacity: 12 fl oz.